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      1 /*
      2  * Copyright (C) 2005 Apple Computer, Inc.  All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  *
      8  * 1.  Redistributions of source code must retain the above copyright
      9  *     notice, this list of conditions and the following disclaimer.
     10  * 2.  Redistributions in binary form must reproduce the above copyright
     11  *     notice, this list of conditions and the following disclaimer in the
     12  *     documentation and/or other materials provided with the distribution.
     13  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
     14  *     its contributors may be used to endorse or promote products derived
     15  *     from this software without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
     18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     20  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     24  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #import "WebKitSystemBits.h"
     30 
     31 #import "WebNSFileManagerExtras.h"
     32 #import <mach/host_info.h>
     33 #import <mach/mach.h>
     34 #import <mach/mach_error.h>
     35 #import <sys/sysctl.h>
     36 #import <sys/types.h>
     37 #import <wtf/Assertions.h>
     38 
     39 static host_basic_info_data_t gHostBasicInfo;
     40 static pthread_once_t initControl = PTHREAD_ONCE_INIT;
     41 
     42 static void initCapabilities(void)
     43 {
     44     mach_msg_type_number_t  count;
     45     kern_return_t r;
     46     mach_port_t host;
     47 
     48     /* Discover our CPU type */
     49     host = mach_host_self();
     50     count = HOST_BASIC_INFO_COUNT;
     51     r = host_info(host, HOST_BASIC_INFO, (host_info_t) &gHostBasicInfo, &count);
     52     mach_port_deallocate(mach_task_self(), host);
     53     if (r != KERN_SUCCESS) {
     54         LOG_ERROR("%s : host_info(%d) : %s.\n", __FUNCTION__, r, mach_error_string(r));
     55     }
     56 }
     57 
     58 uint64_t WebMemorySize(void)
     59 {
     60     pthread_once(&initControl, initCapabilities);
     61     return gHostBasicInfo.max_mem;
     62 }
     63 
     64 int WebNumberOfCPUs(void)
     65 {
     66     static int numCPUs = 0;
     67 
     68     if (numCPUs == 0) {
     69         int mib[2];
     70         size_t len;
     71 
     72         mib[0] = CTL_HW;
     73         mib[1] = HW_NCPU;
     74         len = sizeof(numCPUs);
     75         sysctl(mib, 2, &numCPUs, &len, NULL, 0);
     76     }
     77     return numCPUs;
     78 }
     79 
     80 unsigned long long WebVolumeFreeSize(NSString *path)
     81 {
     82     NSDictionary *fileSystemAttributesDictionary = [[NSFileManager defaultManager] attributesOfFileSystemForPath:path error:NULL];
     83     return [[fileSystemAttributesDictionary objectForKey:NSFileSystemFreeSize] unsignedLongLongValue];
     84 }
     85